<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <title>Document</title>
        <!-- 引入VUE -->
        <script src="./js/vue.js"></script>
    </head>
    <body>
        <div id="root">
            姓：<input type="text" v-model="firstName"><br>
            名：<input type="text" v-model="lastName"><br>
            全名：<span>{{fullName()}}</span>
        </div>
        <script>
            Vue.config.productionTip = false;// 阻止vue在启动时生成生产提示
            const vm = new Vue({
                el:'#root',
                data:{
                    firstName:'张',
                    lastName:'三'
                },
                methods: {
                    fullName(){
                        return this.firstName + '--' + this.lastName
                    }
                }
            })
        </script>
    </body>
</html>